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Open access

Ali Asghar Peyvandi, Mahbobeh Oroei and Shahrokh Khoshsirat

Abstract

BACKGROUND. Septoplasty is routinely used to resolve the deviated nasal septum. To obviate postoperative complications, some surgeons pack both nasal cavities and some other use suturing techniques after septoplasty.

OBJECTIVE. To investigate the efficacy of septal suturing and packing in patients post-septoplasty.

MATERIAL AND METHODS. This study was conducted in the Department of Otorhinolaryngology, Loghman Hakim, Tehran, Iran. 146 patients aged 17 years and above were enrolled for septoplasty. Septal suture was performed in 73 patients (group A) and nasal packing in the other 73 patients (group B). The principal outcomes in terms of bleeding, pain, respiratory problems, septal hematoma, adhesion and perforation were measured over a post-operative follow-up period.

RESULTS. A total of 146 patients, 74% female and 26% male, were enrolled. There were statistically significant differences between the two groups with respect to respiratory problems and patient comfort (p<0.001). The patients in both groups had no septal perforation.

CONCLUSION. Septoplasty using trans-septal suturing without packing can be safe and suitable to prevent or minimize postoperative complications.

Open access

Ramiya Ramachandran Kaipuzha, Nirmal Coumare Venkataramanujam, Padmanabhan Karthikeyan and Davis Thomas Pulimoottil

Abstract

OBJECTIVE. To study and compare the benefits of microdebrider-assisted endoscopic sinus surgery and conventional endoscopic sinus surgery in terms of subjective and objective improvement in symptoms of nasal polyposis.

MATERIAL AND METHODS. This study involved 60 patients with bilateral sinonasal polyposis scheduled to undergo Endoscopic Sinus Surgery. The patients were randomized into two groups: Group A -Conventional endoscopic sinus surgery and Group B -Microdebrider-assisted endoscopic sinus surgery.

RESULTS. There was a significant difference in the mean VAS at 3 months postoperatively in Group B, but no significant difference at 6 months postoperatively following either of the two methods. The mean time for surgery (p<0.01) and the mean intraoperative blood loss (p<0.01) were significantly lower in Group B.

CONCLUSION. A well-trained surgeon with proper anatomical knowledge, good instruments, hypotensive anaesthesia, minimal mucosal injury and regular proper follow-up will have similar postoperative results with both methods.

Open access

Cristina Ariza-Carricondo, Francesca Di Mauro, Maarten Op de Beeck, Marilyn Roland, Bert Gielen, Domenico Vitale, Reinhart Ceulemans and Dario Papale

Abstract

The agreement of Leaf Area Index (LAI) assessments from three indirect methods, i.e. the LAI–2200 Plant Canopy Analyzer, the SS1 SunScan Canopy Analysis System and Digital Hemispherical Photography (DHP) was evaluated for four canopy types, i.e. a short rotation coppice plantation (SRC) with poplar, a Scots pine stand, a Pedunculate oak stand and a maize field. In the SRC and in the maize field, the indirect measurements were compared with direct measurements (litter fall and harvesting). In the low LAI range (0 to 2) the discrepancies of the SS1 were partly explained by the inability to properly account for clumping and the uncertainty of the ellipsoidal leaf angle distribution parameter. The higher values for SS1 in the medium (2 to 6) to high (6 to 8) ranges might be explained by gap fraction saturation for LAI–2200 and DHP above certain values. Wood area index –understood as the woody light-blocking elements from the canopy with respect to diameter growth– accounted for overestimation by all indirect methods when compared to direct methods in the SRC. The inter-comparison of the three indirect methods in the four canopy types showed a general agreement for all methods in the medium LAI range (2 to 6). LAI–2200 and DHP revealed the best agreement among the indirect methods along the entire range of LAI (0 to 8) in all canopy types. SS1 showed some discrepancies with the LAI–2200 and DHP at low (0 to 2) and high ranges of LAI (6 to 8).

Open access

Fatemeh Afrasiabi, Habib Khodaverdiloo, Farrokh Asadzadeh and Martinus Th. van Genuchten

Abstract

Complete descriptions of the particle-size distribution (PSD) curve should provide more information about various soil properties as opposed to only the textural composition (sand, silt and clay (SSC) fractions). We evaluated the performance of 19 models describing PSD data of soils using a range of efficiency criteria. While different criteria produced different rankings of the models, six of the 19 models consistently performed the best. Mean errors of the six models were found to depend on the particle diameter, with larger error percentages occurring in the smaller size range. Neither SSC nor the geometric mean diameter and its standard deviation correlated significantly with the saturated hydraulic conductivity (Kfs); however, the parameters of several PSD models showed significant correlation with Kfs. Porosity, mean weight diameter of the aggregates, and bulk density also showed significant correlations with PSD model parameters. Results of this study are promising for developing more accurate pedotransfer functions.

Open access

Tayyab Naveed, Azmat Hussain, Aijaz Ahmed Babar, Awais Naeem, Hassan Mussana, Wang Xin, Li Duan and Yueqi Zhong

Abstract

In the apparel manufacturing, fabric utilization always remains the significant apprehensions in controlling the production expenditure. Alteration in pattern shapes and marker preparation leads to the enormous utilization of fabric. The purpose of this research is to study fabric efficiency in correspondence with four different human body shapes in both genders. Two clothing styles, fitted trousers and fitted shirts, were processed conventionally in the garment manufacturing company. The comparative study of auto-marker and manual-marker making through Garment Gerber Technology (GGT) software were also accomplished. The evaluation of fabric consumptions, marker efficiency, marker loss, fabric loss, and fabric cost relevant to four different body shapes was analyzed for both women and men. The investigation carried out in this article concludes that there are differences in fabric consumptions, efficiencies, and cost-effectiveness relative to body shapes. The result revealed that the manualmarker of trousers for triangular body shape in women’s wears has the least fabric consumption (most cost-effective), whereas the shirt’s auto-marker for an oval body shape in men’s wears has the most fabric utilization (least costeffective). The manual-virtual-marker making is efficient (significant p-value) than auto-generated-markers. Also, fabric utilization for women’s garments is cost-effective than that for men. Trousers are cost-effective compared to the shirts.

Open access

Daiva Mikucioniene, Lina Cepukone, Khalifah A. Salmeia and Sabyasachi Gaan

Abstract

A very promising cellulose-based natural fibre that is suitable for use in the textile industry is peat fibre. This fibre is a by-product of peat excavation, purified by separating it from other components. In this study, the morphological, chemical and mechanical properties of peat fibres as well as flammability of peat-based knitted fabrics were analysed. The average diameter of the peat fibres is ~60 μm, but it varies in very wide ranges – 25–150 μm; however, the number of fibres with diameter more than 100 μm is very low. As the peat fibre contains a high amount of lignin, lignin amount in the mixed peat/cotton yarn is relatively high too. Lignin is responsible for enhanced flame retardancy; therefore, time to ignition of the peat knit is ~30% higher than that of the cotton knit. Consequently, peat fibre can be used in the knitted structure in order to significantly reduce its flammability. In order to increase the flame retardancy, the knits have been treated by flame retardant in various concentrations. It was found that around the burned hole on the peat knit, treated by very low concentration flame retardant, forms charred area and the knit stops to burn even if the flame source is not removed.

Open access

Olayinka O. Ajani, Martins T. Nlebemuo, Joseph A. Adekoya, Kehinde O. Ogunniran, Tolutope O. Siyanbola and Christiana O. Ajanaku

Abstract

Surpassing heart diseases, cancer is taking the lead as the deadliest disease because of its fast rate of spreading in all parts of the world. Tireless commitment to searching for novel therapeutic medicines is a worthwhile adventure in synthetic chemistry because of the drug resistance predicament and regular outbreak of new diseases due to abnormal cell growth and proliferation. Medicinal chemistry researchers and pharmacists have unveiled quinoxaline templates as precursors of importance and valuable intermediates in drug discovery because they have been established to possess diverse pharmacological potentials. Hence, this review highlights the current versatile routes to accessing functionalized quinoxaline motifs and harnessing their documented therapeutic potentials for anticancer drug development.

Open access

Lingjie Zhang, Xuhong Miao and Ailan Wan

Abstract

The lapping angle, which affects the style and quality of production, has been studied as a parameter of weft knitting. But the importance of the lapping angle has not been considered during the warp-knitting cycle. This paper shows that the lapping angle exists in the process of warp knitting and can be divided into horizontal and vertical lapping angles. Models for the lapping angles of closed and open loops were devised, and the lapping angles (horizontal and vertical lapping angles) of closed and open loops were calculated and analyzed. Furthermore, the paper seeks to investigate the factors that influence the lapping angle of tricot warp-knitted fabrics and summarize the rules. Moreover, the vertical lapping angle can affect the loop coverage. Results reveal that the decrease in number of underlaps and an increase in take-off density enables loops of the front guide bar to show on the face of the fabric. Moreover, it is also advantageous for an apparent front loop visibility when the front guide bar knits in open loop.

Open access

Zuzana Allmanová, Mária Vlčková, Martin Jankovský, Matúš Jakubis and Michal Allman

Abstract

This paper focused on predicting the bank erosion through the Bank Assessment for Non-point source Consequences of Sediment (BANCS) model on the Tŕstie water stream, located in the western Slovakia. In 2014, 18 experimental sections were established on the stream. These were assessed through the Bank Erosion Hazard Index (BEHI) and the Near Bank Stress (NBS) index. Based on the data we gathered, we constructed two erosion prediction curves. One was for BEHI categories low and moderate, and one for high, very high, and extreme BEHI. Erosion predicted through the model correlated strongly with the real annual bank erosion – for low and moderate BEHI, the R2 was 0.51, and for high, very high and extreme BEHI, the R2 was 0.66. Our results confirmed that the bank erosion can be predicted with sufficient precision on said stream through the BANCS model.

Open access

Zhongjian Li, Fei Yu, Ning Zhang, Yichen Lu, Ruru Pan and Weidong Gao

Abstract

In this article, a computerized method is proposed for simulating digital woven fabric (DWF) based on sequential yarn images captured from a moving yarn. A mathematical model of woven fabric structure is established by assuming that the crimped shape of yarns in weave structure is elastica, and the cross-sections of yarn in sequence image and fabric are circular and ellipse, respectively. The sequential yarn images, which are preprocessed and stitched first by image processing methods, are resized based on the mathematical model. Then a light intensity curve, which consists of radial curve model and axial curve model, is used to simulate the gray texture distribution of interlacing points in radial and axial directions. Finally, a Boole Matrix model is used to control the woven pattern. In the experiment, a slub yarn and a normal yarn samples with same count are applied to simulate gray texture fabrics. Then the gray fabrics are transformed to color fabrics based on three color maps. The fabric simulations are confined to single fabrics of plain, 2/2 matt, and 1/3 twill weaves.